alien_0 = {'color': 'green', 'points': 5}
print(alien_0['color'])
print(alien_0['points'])

alien_0['X'] = 0
alien_0['Y'] = 25
print(alien_0)

alien_0 = {}
alien_0['color'] = 'red'
alien_0['points'] = 100
print(alien_0)

del alien_0['color']
print(alien_0)

favorite_language = {'jack': 'C++',
                     'pony': 'C',
                     'robby': 'Python',
                     'mask': 'go'
                     }
language = favorite_language['jack'].title()
print(f"jack favorite language is {language}")

value=favorite_language.get('p','No value')
print(f"value is {value}")